ctvs ceramic transient voltage suppressors - tdk ceramic transient voltage suppressors ... sr 1 s 14...

CTVS

Ceramic transient voltage suppressors

Leaded transient voltage/RFI suppressors (SHCVs)

Series/Type:

Date: February 2017

© EPCOS AG 2017. Reproduction, publication and dissemination of this publication, enclosures hereto and theinformation contained therein without EPCOS' prior express consent is prohibited.

EPCOS AG is a TDK Group Company.

EPCOS type designation system for leaded transient voltage/ RFI suppressors

SR 1 S 14 B M 474 X G

SR Leaded,

SHCV series

EIA case sizes of used chips:

6 12 x 06 / 3.2 x 1.6 mm

1 18 x 12 / 4.5 x 3.2 mm

2 22 x 20 / 5.7 x 5.0 mm

Varistor voltage tolerance:

K ±10%

S Special tolerance

Maximum RMS operating voltage (VRMS):

14 14 V

20 20 V

35 35 V

Special varistor voltage tolerance:

B Special tolerance

Capacitance tolerance:

M ±20%

Capacitance value:

474 47 104 pF 0.47 µF

Capacitor ceramic:

X X7R

Taping mode:

G Taped version

Bulk


SHCV series

of 22Please read Cautions and warnings andImportant notes at the end of this document.

1) Operating temperatures above +85 °C can cause a change in color of the coating material, which has no impact on the reliability of thecomponents.

Features

EMI/ RFI noise suppression and transient overvoltage protection integrated in

a single component

Suppression of transients, caused by sudden interruption of currents

Protection against electrical transients in automotive battery lines

(acc. to ISO 7637-2 and ISO 16750-2)

High capacitance (up to 4.7 µF)

Low clamping voltage

RoHS-compatible

Suitable for lead-free soldering

PSpice simulation models available

Applications

RFI noise suppression and transient overvoltage protection on DC lines of

small motors, windscreen wipers, window lifters, mirrors, central locking,

memory seat, sunroof

Design

Combination of multilayer RF filter capacitor and multilayer varistor

Coating: flame-retardant to UL 94 V0, epoxy resin

Terminals: tinned iron wire, RoHS-compatible

V/I characteristics and derating curves

V/I and derating curves are attached to the data sheet. The curves are sorted

by VRMS and then by case size, which is included in the type designation.

General technical data

Maximum RMS operating voltage VRMS,max 14 ... 35 V

Maximum DC operating voltage VDC,max 16 ... 45 V

Maximum surge current (8/20 µs) Isurge,max 100 ... 1200 A

Maximum load dump energy (10 pulses) WLD 1.5 ... 12 J

Maximum jump-start voltage (5 min) Vjump 24.5 ... 45 V

Maximum clamping voltage (8/20 µs) Vclamp,max 38 ... 90 V

Nominal capacitance (1 kHz, 0.5 V) Cnom 220 ... 4700 nF

Insulation resistance Rins ≥ 10 MΩResponse time tresp < 25 ns

Operating temperature 1) Top 55/+125 °CStorage temperature LCT/UCT 55/+150 °C


SHCV series


Electrical specifications and ordering codes

Maximum ratings (Top,max = 125 °C)

Type Ordering code VRMS,max

V

VDC,max

V

Isurge,max

(8/20 µs)

A

Wmax

(2 ms)

mJ

WLD

(10

pulses)

J

Pdiss,max

mW

SR1S14BM105X B72587G3140S200 14 16 800 2400 6 15

SR1S14BM155X B72587H3140S200 14 16 800 2400 6 15

SR1S14BM474X B72587E3140S200 14 16 800 2400 6 15

SR2S14BM155X B72547H3140S200 14 16 1200 5800 12 30

SR2S14BM474X B72547E3140S200 14 16 1200 5800 12 30

SR2S14BM475X B72547L3140S200 14 16 1200 5800 12 30

SR6K14M224X B72527C3140K000 14 18 200 500 1.5 8

SR1K20M105X B72587G3200K000 20 26 800 3000 6 15

SR1K20M155X B72587H3200K000 20 26 800 3000 6 15

SR1K20M225X B72587J3200K000 20 26 800 3000 6 15

SR1K20M474X B72587E3200K000 20 26 800 3000 6 15

SR2K20M105X B72547G3200K000 20 26 1200 7800 12 30

SR2K20M155X B72547H3200K000 20 26 1200 7800 12 30

SR2K20M474X B72547E3200K000 20 26 1200 7800 12 30

SR6K20M105X B72527G3200K000 20 26 200 700 1.5 8

SR1K30M155X B72587H3300K000 30 38 800 4200 6 15

SR6K35M105X B72527G3350K000 35 45 100 400 1.5 8

SR6K35M474X B72527E3350K000 35 45 100 400 1.5 8


SHCV series


Characteristics (TA = 25 °C)

Type VV

(1 mA)

V

∆VV

%

Vjump

(5 min)

V

Vclamp,max

V

Iclamp

(8/20 µs)

A

Cnom

(1 kHz, 0.5 V)

nF

∆Cnom

%

SR1S14BM105X 22 +23/ 0 24.5 40 5 1000 ±20

SR1S14BM155X 22 +23/ 0 24.5 40 5 1500 ±20

SR1S14BM474X 22 +23/ 0 24.5 40 5 470 ±20

SR2S14BM155X 22 +23/ 0 24.5 40 10 1500 ±20

SR2S14BM474X 22 +23/ 0 24.5 40 10 470 ±20

SR2S14BM475X 22 +23/ 0 24.5 40 10 4700 ±20

SR6K14M224X 22 ±10 24.5 38 1 220 ±20

SR1K20M105X 33 ±10 26 58 5 1000 ±20

SR1K20M155X 33 ±10 26 58 5 1500 ±20

SR1K20M225X 33 ±10 26 58 5 2200 ±20

SR1K20M474X 33 ±10 26 58 5 470 ±20

SR2K20M105X 33 ±10 26 58 10 1000 ±20

SR2K20M155X 33 ±10 26 58 10 1500 ±20

SR2K20M474X 33 ±10 26 58 10 470 ±20

SR6K20M105X 33 ±10 26 54 1 1000 ±20

SR1K30M155X 47 ±10 45 77 5 1500 ±20

SR6K35M105X 56 ±10 45 90 1 1000 ±20

SR6K35M474X 56 ±10 45 90 1 470 ±20

Temperature derating

Climatic category: 55/+125 °C


SHCV series


Dimensional drawing

Dimensions in mm

Type

SHCV

wmax hmax smax

SR1 ... 474X 7.3 7.8 3.7

SR1 ... 105X 7.3 7.8 3.7

SR1 ... 155X 7.3 7.8 3.7

SR1 ... 225X 7.3 7.8 4.1

SR2 ... 474X 7.8 9.0 3.6

SR2 ... 105X 7.8 9.0 4.1

SR2 ... 155X 7.8 9.0 4.1

SR2 ... 475X 7.8 9.0 4.1

SR6 ... 6.0 7.5 4.5

Delivery mode

Designation Taping mode Ordering code, last two digits

- Bulk B725*********00

G Taped on reel B725*********51

GA Taped in AMMO pack B725*********54

M14 Lead length 14 mm B725*********33

Standard delivery mode for SHCV types is bulk. Taped versions on reel, AMMO pack and special

lead length available upon request.

For further information on taping please contact EPCOS.

Packing units for:

Type Pieces

SR6 2000

SR1 / SR2 1000


SHCV series


Soldering instructions

Soldering

Components with wire leads such as leaded transient voltage/ RFI suppressors (SHCVs) can be

soldered using all conventional methods.

Recommended temperature profile in wave soldering

Storage

The SHCV type series should be soldered after shipment from EPCOS within the time specified:

24 months.

The parts are to be left in the original packing to avoid any soldering problems caused by oxidized

terminals. Storage temperature – 25 to 45 °C.

Max. relative humidity (without condensation): < 75% annual average,

< 95% on max. 30 days per annum.

Standards

IEC 60068-2-20


SHCV series


Typical characteristics

Capacitance change ∆C/C25 versus temperature T

Note:

The capacitance and the dissipation factor shall meet the specified values 1000 hours after the

last heat treatment above the curie temperature.


SHCV series


V/I characteristics

SR1S14B*

SR2S14B*


SHCV series


V/I characteristics

SR6K14*

SR1K20*


SHCV series


V/I characteristics

SR2K20*

SR6K20*


SHCV series


V/I characteristics

SR1K30*

SR6K35*


SHCV series


Derating curves

Maximum surge current Isurge,max = f (tr, pulse train)

For explanation of the derating curves refer to "General technical information", chapter 2.7.1

SHCV-SR1 ...

SHCV-SR2 ...


SHCV series


Derating curves

Maximum surge current Isurge,max = f (tr, pulse train)

For explanation of the derating curves refer to "General technical information", chapter 2.7.1

SR6K14 , SR6K20

SR6K35 ...


SHCV series


Symbols and terms

For ceramic transient voltage suppressors (CTVS)

Symbol Term

Cline,max Maximum capacitance per line

Cline,min Minimum capacitance per line

Cline,typ Typical capacitance per line

Cmax Maximum capacitance

Cmin Minimum capacitance

Cnom Nominal capacitance

∆Cnom Tolerance of nominal capacitance

Ctyp Typical capacitance

fcut-off,max Maximum cut-off frequency

fcut-off,min Minimum cut-off frequency

fcut-off,typ Typical cut-off frequency

fres,typ Typical resonance frequency

I Current

Iclamp Clamping current

Ileak Leakage current

Ileak,max Maximum leakage current

Ileak,typ Typical leakage current

IPP Peak pulse current

Isurge,max Maximum surge current (also termed peak current)

LCT Lower category temperature

Ltyp Typical inductance

Pdiss,max Maximum power dissipation

PPP Peak pulse power

Rins Insulation resistance

Rmin Minimum resistance

RS Resistance per line

RS,typ Typical resistance per line

TA Ambient temperature

Top Operating temperature

Top,max Maximum operating temperature

Tstg Storage temperature


SHCV series


Symbol Term

tr Duration of equivalent rectangular wave

tresp Response time

tresp,max Maximum response time

UCT Upper category temperature

V Voltage

VBR,min Minimum breakdown voltage

Vclamp,max Maximum clamping voltage

VDC,max Maximum DC operating voltage (also termed working voltage)

VESD,air Air discharge ESD capability

VESD,contact Contact discharge ESD capability

Vjump Maximum jump-start voltage

VRMS,max Maximum AC operating voltage, root-mean-square value

VV Varistor voltage (also termed breakdown voltage)

VLD Maximum load dump voltage

Vleak Measurement voltage for leakage current

VV,min Minimum varistor voltage

VV,max Maximum varistor voltage

∆VV Tolerance of varistor voltage

WLD Maximum load dump energy

Wmax Maximum energy absorption (also termed transient energy)

αtyp Typical insertion loss

tan δ Dissipation factor

Lead spacing

* Maximum possible application conditions

All dimensions are given in mm.

The commas used in numerical values denote decimal points.


SHCV series


For CeraDiodes

CeraDiode Semiconductor diode

Cmax Maximum capacitance

Ctyp Typical capacitance

IBR IR, IT (Reverse) current @ breakdown voltage

Ileak IRM (Reverse) leakage current

IPP IP, IPP Current @ clamping voltage; peak pulse

current

PPP PPP Peak pulse power

Top Operating temperature

Tstg Storage temperature

VBR VBR (Reverse) breakdown voltage

VBR,min Minimum breakdown voltage

Vclamp Vcl, VC Clamping voltage

Vclamp,max Maximum clamping voltage

VDC VRM, VRWM, VWM, VDC (Reverse) stand-off voltage, working

voltage, operating voltage

VDC,max Maximum DC operating voltage

VESD,air Air discharge ESD capability

VESD,contact Contact discharge ESD capability

Vleak VRM, VRWM, VWM, VDC (Reverse) voltage @ leakage current

- *) IF Current @ forward voltage

- *) IRM, IRM,max@VRM (Reverse) current @ maximum reverse

stand-off voltage, working voltage,

operating voltage

- *) VF Forward voltage

*) Not applicable due to bidirectional characteristics of CeraDiodes.


SHCV series


Cautions and warnings

General

Some parts of this publication contain statements about the suitability of our ceramic transient

voltage suppressor (CTVS) components (multilayer varistors (MLVs)), CeraDiodes, ESD/EMI fil-

ters, leaded transient voltage/ RFI suppressors (SHCV types)) for certain areas of application, in-

cluding recommendations about incorporation/design-in of these products into customer applica-

tions. The statements are based on our knowledge of typical requirements often made of our

CTVS devices in the particular areas. We nevertheless expressly point out that such statements

cannot be regarded as binding statements about the suitability of our CTVS components for a

particular customer application. As a rule, EPCOS is either unfamiliar with individual customer ap-

plications or less familiar with them than the customers themselves. For these reasons, it is al-

ways incumbent on the customer to check and decide whether the CTVS devices with the proper-

ties described in the product specification are suitable for use in a particular customer applica-

tion.

Do not use EPCOS CTVS components for purposes not identified in our specifications,

application notes and data books.

Ensure the suitability of a CTVS in particular by testing it for reliability during design-in. Always

evaluate a CTVS component under worst-case conditions.

Pay special attention to the reliability of CTVS devices intended for use in safety-critical

applications (e.g. medical equipment, automotive, spacecraft, nuclear power plant).

Design notes

Always connect a CTVS in parallel with the electronic circuit to be protected.Consider maximum rated power dissipation if a CTVS has insufficient time to cool down

between a number of pulses occurring within a specified isolated time period. Ensure that

electrical characteristics do not degrade.

Consider derating at higher operating temperatures. Choose the highest voltage class

compatible with derating at higher temperatures.

Surge currents beyond specified values will puncture a CTVS. In extreme cases a CTVS will

burst.

If steep surge current edges are to be expected, make sure your design is as low-inductance

as possible.

In some cases the malfunctioning of passive electronic components or failure before the end of

their service life cannot be completely ruled out in the current state of the art, even if they are

operated as specified. In applications requiring a very high level of operational safety and

especially when the malfunction or failure of a passive electronic component could endanger

human life or health (e.g. in accident prevention, life-saving systems, or automotive battery line

applications such as clamp 30), ensure by suitable design of the application or other measures

(e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by

third parties in the event of such a malfunction or failure. Only use CTVS components from the

automotive series in safety-relevant applications.


SHCV series


Specified values only apply to CTVS components that have not been subject to prior electrical,

mechanical or thermal damage. The use of CTVS devices in line-to-ground applications is

therefore not advisable, and it is only allowed together with safety countermeasures like

thermal fuses.

Storage

Only store CTVS in their original packaging. Do not open the package prior to processing.Storage conditions in original packaging: temperature 25 to +45°C, relative humidity ≤75%

annual average, maximum 95%, dew precipitation is inadmissible.

Do not store CTVS devices where they are exposed to heat or direct sunlight. Otherwise the

packaging material may be deformed or CTVS may stick together, causing problems during

mounting.

Avoid contamination of the CTVS surface during storage, handling and processing.

Avoid storing CTVS devices in harmful environments where they are exposed to corrosive

gases for example (SOx, Cl).

Use CTVS as soon as possible after opening factory seals such as polyvinyl-sealed packages.

Solder CTVS components after shipment from EPCOS within the time specified:

CTVS with Ni barrier termination, 12 months

CTVS with AgPt termination, 6 months

SHCV, 24 months

Handling

Do not drop CTVS components and allow them to be chipped.Do not touch CTVS with your bare hands - gloves are recommended.

Avoid contamination of the CTVS surface during handling.

Washing processes may damage the product due to the possible static or cyclic mechanical

loads (e.g. ultrasonic cleaning). They may cause cracks to develop on the product and its parts,

which might lead to reduced reliability or lifetime.

Mounting

When CTVS devices are encapsulated with sealing material or overmolded with plasticmaterial, electrical characteristics might be degraded and the life time reduced.Make sure an electrode is not scratched before, during or after the mounting process.Make sure contacts and housings used for assembly with CTVS components are clean before

mounting.

The surface temperature of an operating CTVS can be higher. Ensure that adjacent

components are placed at a sufficient distance from a CTVS to allow proper cooling.

Avoid contamination of the CTVS surface during processing.


SHCV series


Soldering

Complete removal of flux is recommended to avoid surface contamination that can result in aninstable and/or high leakage current.Use resin-type or non-activated flux.

Bear in mind that insufficient preheating may cause ceramic cracks.

Rapid cooling by dipping in solvent is not recommended, otherwise a component may crack.

Operation

Use CTVS only within the specified operating temperature range.Use CTVS only within specified voltage and current ranges.

Environmental conditions must not harm a CTVS. Only use them in normal atmospheric

conditions. Reducing the atmosphere (e.g. hydrogen or nitrogen atmosphere) is prohibited.

Prevent a CTVS from contacting liquids and solvents. Make sure that no water enters a CTVS

(e.g. through plug terminals).

Avoid dewing and condensation.

EPCOS CTVS components are mainly designed for encased applications. Under all

circumstances avoid exposure to:

direct sunlight

rain or condensation

steam, saline spray

corrosive gases

atmosphere with reduced oxygen content

EPCOS CTVS devices are not suitable for switching applications or voltage stabilization where

static power dissipation is required.

This listing does not claim to be complete, but merely reflects the experience of EPCOS AG.

Display of ordering codes for EPCOS products

The ordering code for one and the same EPCOS product can be represented differently in data

sheets, data books, other publications, on the EPCOS website, or in order-related documents

such as shipping notes, order confirmations and product labels. The varying representations of

the ordering codes are due to different processes employed and do not affect the

specifications of the respective products. Detailed information can be found on the Internet

under www.epcos.com/orderingcodes


SHCV series


The following applies to all products named in this publication:

1. Some parts of this publication contain statements about the suitability of our products for

certain areas of application. These statements are based on our knowledge of typical re-

quirements that are often placed on our products in the areas of application concerned. We

nevertheless expressly point out that such statements cannot be regarded as binding

statements about the suitability of our products for a particular customer application.

As a rule, EPCOS is either unfamiliar with individual customer applications or less familiar

with them than the customers themselves. For these reasons, it is always ultimately incum-

bent on the customer to check and decide whether an EPCOS product with the properties de-

scribed in the product specification is suitable for use in a particular customer application.

2. We also point out that in individual cases, a malfunction of electronic components or

failure before the end of their usual service life cannot be completely ruled out in the

current state of the art, even if they are operated as specified. In customer applications

requiring a very high level of operational safety and especially in customer applications in

which the malfunction or failure of an electronic component could endanger human life or

health (e.g. in accident prevention or lifesaving systems), it must therefore be ensured by

means of suitable design of the customer application or other action taken by the customer

(e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by

third parties in the event of malfunction or failure of an electronic component.

3. The warnings, cautions and product-specific notes must be observed.

4. In order to satisfy certain technical requirements, some of the products described in this

publication may contain substances subject to restrictions in certain jurisdictions (e.g.

because they are classed as hazardous). Useful information on this will be found in our Ma-

terial Data Sheets on the Internet (www.epcos.com/material). Should you have any more de-

tailed questions, please contact our sales offices.

5. We constantly strive to improve our products. Consequently, the products described in this

publication may change from time to time. The same is true of the corresponding product

specifications. Please check therefore to what extent product descriptions and specifications

contained in this publication are still applicable before or when you place an order. We also

reserve the right to discontinue production and delivery of products. Consequently, we

cannot guarantee that all products named in this publication will always be available. The

aforementioned does not apply in the case of individual agreements deviating from the fore-

going for customer-specific products.

6. Unless otherwise agreed in individual contracts, all orders are subject to the current ver-

sion of the "General Terms of Delivery for Products and Services in the Electrical In-

dustry" published by the German Electrical and Electronics Industry Association

(ZVEI).

Important notes

of 22

7. The trade names EPCOS, CeraDiode, CeraLink, CeraPad, CeraPlas, CSMP, CTVS,

DeltaCap, DigiSiMic, ExoCore, FilterCap, FormFit, LeaXield, MiniBlue, MiniCell, MKD, MKK,

MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, PowerHap, PQSine, PQvar,

SIFERRIT, SIFI, SIKOREL, SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV,

ThermoFuse, WindCap are trademarks registered or pending in Europe and in other coun-

tries. Further information will be found on the Internet at www.epcos.com/trademarks.

Important notes

of 22

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